Chair for theaters or the like.



A. PORSTER & H. WANEK.

CHAIR FOR THEATERS OR THE LIKE.

APPLIUATION FILED NOV. 7, 1912.

Patented Dec. 9, 1913.

1 drawing, in whi h; p

I ,Figure 1 is an elevation, Fig. 2 a ti l UNITED STATEs PATENT oF IoE.

ANDREAS FORSTER AND HANS WANEK, OFVVIENNA, AUSTRIAFHUNGARY.

Specification of Letters Patent.

Patented Dec. 9, 1913.

Application filed November 7, 1912. Serial No. 729,925. Y

To all whom it may concern.

Be it known that we, ANDREAS FoRsTER, gentleman, and HANS WANEK,gentleman, of Vienna, in the Empire of Austria-Hungary, have inventedcertain new and useful Improvements in or Relating to Chairs forTheaters or the like; and we do hereby declare the following to be afull, clear, and

'eandescent lamp is arranged on the supporting frame to which the seatand the back are pivoted, and a rotary switch is provided in the lampcircuit whichis controlled by the movement of the back or of the seatvproper in such a manner that the lamp is switched into circuit by suchmovement. In

the event of the main lighting installation fa'ling, these small lampssupply the necessary light and moreover indicate the exits to the publicwho are thus afl'orded guidance;

A chair or seat accerding to this invention is illustrated in section,and Fig. 3 a detail of the chair,

showing the electrical connections of the lamp.

To a lateral supporting frame -1 of any desired construction is pivotedthe folding seat which, in the position of use, could also rest, ifdesired, on a .rib 3 of the next supporting frame 1. The pivot pin 4(Fig. 3) of the seat is provided with an arm 5 which by means of thelinks 6 and 7 engages with the back, 8 of the chair, the back like theseat proper being pivoted to the lateral supporting frame. A spring 10engaging with the arm 9 of the pivot pin of the seat, can effect in thewell known manner automatic folding back of the seat, if this is notdone by the weight of the back alone.

' When the seat 2 is'turned. into the position of use, and in that wayits pivot pin 4 the accompanying turned, the arm 5 of the latter, bymeans of the links 6 and,7, will bring about at the same time a turningupward of the' back 8. If the seat is released, it will be folded up bythe action of the spring 10, the back comingsimultaneously into theplane of the lateral supporting frame,. so that the gangway at rightangles to the line of seats will be quite clear. At the same time, aswitch will be operated which will close' a circuit in. any desiredmanner and so illuminate an incandescent lainp countersunk in thesupporting frame. for example consist of an insulated sleeve 11mountedon the pivot pin 4 (Fig. 3) and comprising a conductive part 12 and anonconductive part 13. Against this sleeve 11 presses one end of asliding metal spring 14,

the other end of which is connected by means of a conductive wire 15'tothe one pole of an electric source 16,,having its other pole connectedby a wire 17 to the electric incandescent lamp 18. The conductive part12 of the sleeve also communicates by means of a conductor 19 with thelamp.

When the seat is in its position of use the spring 14 bears against thenon-conductive part, so that the electric circuit is interrupted. Incase, the seat is released and turned into its vertical position thespring l l makes contact with the conductive part 12 of the sleeve,thereby closing the circuit,

so that the filament of the lamp is brought to incandescence.

I "ANDREAS FORSTER. HANS WANEK.

' Witnesses: T

JOHANN LU'rz, AUGUST FUGGER.

This switching device may,

